From: John Garry <john.garry@huawei.com>
Date: Mon, 6 Dec 2021 20:49:49 +0800
Subject: [PATCH] blk-mq: Delete busy_iter_fn
Git-commit: fc39f8d2d1c10ac04976b0a247865bb0cec4dd88
Patch-mainline: v5.17-rc1
References: jsc#PED-1183

Typedefs busy_iter_fn and busy_tag_iter_fn are now identical, so delete
busy_iter_fn to reduce duplication.

It would be nicer to delete busy_tag_iter_fn, as the name busy_iter_fn is
less specific.

However busy_tag_iter_fn is used in many different parts of the tree,
unlike busy_iter_fn which is just use in block/, so just take the
straightforward path now, so that we could rename later treewide.

Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Tested-by: Kashyap Desai <kashyap.desai@broadcom.com>
Link: https://lore.kernel.org/r/1638794990-137490-3-git-send-email-john.garry@huawei.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Acked-by: Hannes Reinecke <hare@suse.com>
---
 block/blk-mq-tag.c     | 6 +++---
 block/blk-mq-tag.h     | 2 +-
 include/linux/blk-mq.h | 1 -
 3 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/block/blk-mq-tag.c b/block/blk-mq-tag.c
index d3cf91d764d5..58b80d4b7a07 100644
--- a/block/blk-mq-tag.c
+++ b/block/blk-mq-tag.c
@@ -215,7 +215,7 @@ void blk_mq_put_tags(struct blk_mq_tags *tags, int *tag_array, int nr_tags)
 
 struct bt_iter_data {
 	struct blk_mq_hw_ctx *hctx;
-	busy_iter_fn *fn;
+	busy_tag_iter_fn *fn;
 	void *data;
 	bool reserved;
 };
@@ -274,7 +274,7 @@ static bool bt_iter(struct sbitmap *bitmap, unsigned int bitnr, void *data)
  *		bitmap_tags member of struct blk_mq_tags.
  */
 static void bt_for_each(struct blk_mq_hw_ctx *hctx, struct sbitmap_queue *bt,
-			busy_iter_fn *fn, void *data, bool reserved)
+			busy_tag_iter_fn *fn, void *data, bool reserved)
 {
 	struct bt_iter_data iter_data = {
 		.hctx = hctx,
@@ -457,7 +457,7 @@ EXPORT_SYMBOL(blk_mq_tagset_wait_completed_request);
  * called for all requests on all queues that share that tag set and not only
  * for requests associated with @q.
  */
-void blk_mq_queue_tag_busy_iter(struct request_queue *q, busy_iter_fn *fn,
+void blk_mq_queue_tag_busy_iter(struct request_queue *q, busy_tag_iter_fn *fn,
 		void *priv)
 {
 	struct blk_mq_hw_ctx *hctx;
diff --git a/block/blk-mq-tag.h b/block/blk-mq-tag.h
index df787b5a23bd..5668e28be0b7 100644
--- a/block/blk-mq-tag.h
+++ b/block/blk-mq-tag.h
@@ -28,7 +28,7 @@ extern void blk_mq_tag_resize_shared_tags(struct blk_mq_tag_set *set,
 extern void blk_mq_tag_update_sched_shared_tags(struct request_queue *q);
 
 extern void blk_mq_tag_wakeup_all(struct blk_mq_tags *tags, bool);
-void blk_mq_queue_tag_busy_iter(struct request_queue *q, busy_iter_fn *fn,
+void blk_mq_queue_tag_busy_iter(struct request_queue *q, busy_tag_iter_fn *fn,
 		void *priv);
 void blk_mq_all_tag_iter(struct blk_mq_tags *tags, busy_tag_iter_fn *fn,
 		void *priv);
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index 17ebf29e42d8..772f8f921526 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -470,7 +470,6 @@ struct blk_mq_queue_data {
 	bool last;
 };
 
-typedef bool (busy_iter_fn)(struct request *, void *, bool);
 typedef bool (busy_tag_iter_fn)(struct request *, void *, bool);
 
 /**
-- 
2.35.3